chi-squared statistics

См. также в других словарях:

• Chi-squared test — Chi square test is often shorthand for Pearson s chi square test. A chi square test, also referred to as chi squared test or χ2 test, is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi square… …   Wikipedia

• Chi-squared distribution — This article is about the mathematics of the chi squared distribution. For its uses in statistics, see chi squared test. For the music group, see Chi2 (band). Probability density function Cumulative distribution function …   Wikipedia

• Chi-squared — In statistics, the term chi squared has different uses: chi squared distribution, a continuous probability distribution; chi squared statistic, a statistic used in some statistical tests; chi squared test, name given to some tests using chi… …   Wikipedia

• Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …   Wikipedia

• Noncentral chi-squared distribution — Noncentral chi squared Probability density function Cumulative distribution function parameters …   Wikipedia

• Chi distribution — chi Probability density function Cumulative distribution function parameters …   Wikipedia

• chi-square test — Statistics. a test devised by Karl Pearson that uses the quantity chi square for testing the mathematical fit of a frequency curve to an observed frequency distribution. Also, chi squared test /kuy skwaird /. [1935 40] * * * chi square test UK… …   Useful english dictionary

• chi-square test — Statistics. a test devised by Karl Pearson that uses the quantity chi square for testing the mathematical fit of a frequency curve to an observed frequency distribution. Also, chi squared test /kuy skwaird /. [1935 40] * * * …   Universalium

• Chi-square distribution — Probability distribution name =chi square type =density pdf cdf parameters =k > 0, degrees of freedom support =x in [0; +infty), pdf =frac{(1/2)^{k/2{Gamma(k/2)} x^{k/2 1} e^{ x/2}, cdf =frac{gamma(k/2,x/2)}{Gamma(k/2)}, mean =k, median… …   Wikipedia

• Chi-deux — Test du χ²  Pour la loi de probabilité, voir Loi du χ². Densité du χ² en fonction du nombre de degrés de liberté Le test du χ² (prononcer …   Wikipédia en Français

• Chi 2 — Test du χ²  Pour la loi de probabilité, voir Loi du χ². Densité du χ² en fonction du nombre de degrés de liberté Le test du χ² (prononcer …   Wikipédia en Français